Anything outside the VirtualHost tags will affect all websites of the apache webserver. Any line starting with a hash '#' is a comment.
# --
# $Id: apache2-httpd.include.conf,v 1.18.2.2 2011/03/20 08:37:54 mb Exp $
# --
# activate this if you are using an Oracle database
#SetEnv ORACLE_HOME /path/to/your/oracle/
#SetEnv ORACLE_SID YOUR_SID
#SetEnv NLS_LANG AMERICAN_AMERICA.UTF8
#SetEnv NLS_DATE_FORMAT 'YYYY-MM-DD HH24:MI:SS'
<VirtualHost *:80>
DocumentRoot "/opt/otrs/var/httpd/htdocs/"
ServerName support
ErrorLog "/var/log/httpd/otrs-error_log"
CustomLog "/var/log/httpd/otrs-access_log" common
# agent, admin and customer frontend
ScriptAlias /otrs/ "/opt/otrs/bin/cgi-bin/"
Alias /otrs-web/ "/opt/otrs/var/httpd/htdocs/"
# if mod_perl is used
<IfModule mod_perl.c>
# load all otrs modules
# Apache::Reload - Reload Perl Modules when Changed on Disk
PerlModule Apache2::Reload
PerlInitHandler Apache2::Reload
PerlModule Apache2::RequestRec
# set mod_perl2 options
<Location /otrs>
SetHandler perl-script
PerlResponseHandler ModPerl::Registry
Options +ExecCGI
PerlOptions +ParseHeaders
PerlOptions +SetupEnv
Order allow,deny
Allow from all
</Location>
</IfModule>
# directory settings
<Directory "/opt/otrs/bin/cgi-bin/">
AllowOverride None
Options +ExecCGI -Includes
Order allow,deny
Allow from all
</Directory>
<Directory "/opt/otrs/var/httpd/htdocs/">
AllowOverride None
Order allow,deny
Allow from all
</Directory>
<IfModule mod_headers.c>
<Directory "/opt/otrs/var/httpd/htdocs/skins/*/*/css-cache">
<FilesMatch "\.(css|CSS)$">
Header set Cache-Control "max-age=2592000 must-revalidate"
</FilesMatch>
</Directory>
<Directory "/opt/otrs/var/httpd/htdocs/js_new/js-cache">
<FilesMatch "\.(js|JS)$">
Header set Cache-Control "max-age=2592000 must-revalidate"
</FilesMatch>
</Directory>
</IfModule>
</VirtualHost>